NORME INTERNATIONALE CEI IEC INTERNATIONAL STANDARD 60706 3 Deuxième édition Second edition 2006 04 Maintenabilité de matériel – Partie 3 Vérification et recueil, analyse et présentation de données Ma[.]
Objectif de la vérification
The goal is to ensure that the qualitative and quantitative maintainability requirements have been met within the specified limits for operational readiness This includes verifying that the defined maintenance activities have restored the entity to its intended operational state The verification applies to hardware, software, and maintenance equipment.
Maintainability verification is a process that assesses the experimental results of maintainability This evaluation can begin as soon as data and results are available and may continue throughout the project, extending into the operational phase.
Cela est développé plus loin en fonction
– des exigences qualitatives de maintenabilité, voir Article 5,
– des exigences quantitatives de maintenabilité, voir Article 6
Les procédures de démonstration sont décrites dans l'Article 7
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For the purposes of this document, the terms and definitions given in IEC 60050(191), together with the following definitions, apply
3.1 customer selected equipment portion of the item under consideration which has been specially selected by the customer
The supplier typically lacks control over the maintainability of this aspect, yet it is essential to factor it into the item's design Effective collaboration between the customer and supplier is highly beneficial.
3.2 maintainability demonstration activity performed on individual items or samples to indicate achievement of a specific maintainability requirement and/or to generate maintainability data
3.3 maintainability verification monitoring actions, inspections or both for the purpose of determining compliance by the contractor with the maintainability requirements specified for an item
3.4 maintenance concept interrelationship between the maintenance echelons, the indenture levels and the levels of maintenance to be applied for the maintenance of an item
3.5 maintenance policy general approach to the provision of maintenance and maintenance support based on the objectives and policies of owners, users and customers
3.6 software support centre centralized software maintenance service
The goal is to ensure that both qualitative and quantitative maintainability requirements are satisfied within the established performance limits This involves confirming that the designated maintenance activities have successfully restored the item to its required performance level, applicable to hardware, software, and maintenance facilities.
Maintainability verification is a process of assessing the results of maintainability experience
This assessment can begin as soon as data and results are available and may continue throughout the project and extend into field use
This is further expanded with respect to
– qualitative maintainability requirements, see Clause 5,
– quantitative maintainability requirements, see Clause 6
Demonstration procedures are described in Clause 7
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Concepts de support de maintenance influenỗant la vộrification de maintenance
When assessing maintainability, it is essential to recognize that various aspects of maintenance logistics significantly impact the effectiveness of the maintenance process.
– équipements liés au soutien logistique;
– personnel de maintenance et formation;
– conditions de transport, de manutention et de magasinage
La CEI 60300-3-14 donne des détails sur le support de maintenance
Maintainability verification is an ongoing process that involves the generation, collection, analysis, and evaluation of maintainability data This process utilizes the data as soon as it becomes available during the project development and compares the results against the specified maintainability requirements.
Verification methods for maintainability vary by program phase, including: a) analysis and review, which involves examining experience data, comparing design review results, and maintainability predictions, potentially incorporating operational data throughout the lifecycle; b) special studies conducted during the concept and definition or design and development phases to address general or detailed issues, such as maintenance feasibility studies, maintenance operation analyses, and simulation studies; c) demonstration tests performed at the end of the design and development phase on prototypes or pre-production models if prior analyses or special studies do not sufficiently confirm compliance with specified maintainability requirements; d) operational phase data review, relying on operational experience and data review, correlating with the examination and analysis of experimental feedback when appropriate; e) three-dimensional imaging simulation, which can be conducted at the right time in the design process to ensure that the proposed sequence of operations, accessibility, and work environment meet the required maintainability standards.
The procedural elements of the verification process include the identification and activation of potential data sources during the initial phases of the project Initially, only data from previous experiences of comparable entities can be utilized Subsequently, data related to design, manufacturing, testing, and eventually operation becomes accessible In this context, maintainability demonstrations serve as a unique data source for generating maintainability data under simulated conditions.
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4.2 Maintenance support concepts influencing maintainability verification
When performing maintainability verification, it should be borne in mind that the following maintenance support elements have a decisive influence on the effectiveness of the maintenance process:
– transportation, handling and storage conditions
IEC 60300-3-14 contains further details on maintenance support
Maintainability verification is an ongoing process that involves generating, collecting, analyzing, and evaluating data related to maintainability throughout project development, while also comparing the findings against established maintainability requirements.
Methods for verifying maintainability vary by program phase, including: a) analysis and review, which involves examining historical data and comparing it with design review results and maintainability predictions; b) special studies, conducted during the concept and design phases to address specific issues, such as ease-of-maintenance and maintenance task analysis; c) demonstration tests, carried out at the end of the design phase on prototypes to ensure maintainability meets specified requirements; d) review of operational experience, relying on field data and historical analysis; and e) spatial imaging simulation, utilizing 3D computer simulations to confirm that maintenance actions and workspace considerations align with maintainability goals throughout the design process.
The verification process involves key procedural elements, including the identification and activation of potential data sources during the initial phases of a project, where only historical data from comparable previous items is utilized.
Later, design, manufacturing, test and finally field data become available Maintainability demonstrations in this context provide a special data source for the generation of maintainability data under simulated conditions;
The article discusses the internal use of data acquisition and analysis at MECON Limited in Ranchi/Bangalore, as supplied by the Book Supply Bureau It emphasizes the collection, review, and sorting of data to ensure its applicability The evaluation process involves processing the data using mathematical models or checklists to derive quantitative characteristics or qualitative properties related to maintainability Finally, the results of the evaluation are compared with maintainability requirements to ensure compliance with these standards.
For a comprehensive maintainability verification, the following information is essential: the entity's maintenance plan, which applies the maintenance concept to the entity and should be defined for interpreting past experience data and information from other sources This plan outlines the conditions, constraints, and necessary support for the verification process Additionally, reliability data, including relevant reliability indicators such as the expected frequency of maintenance operations, may be required to calculate certain maintainability indicators based on estimated or observed times for basic maintenance tasks The reliability data will also impact aspects of the verification, such as prioritization, which conditions prerequisites for evaluation If this information is unavailable or incomplete, assumptions must be made, and the quality of the available information and the assumptions will influence the relevance of the verification results.
The client should specify methods, or the holder may select them, and these methods must be outlined in the maintainability program plan.
When making decisions regarding verification procedures for maintainability requirements, several key factors must be considered First, the availability of resources is crucial, especially when a budget limit is contractually set, as it will influence the choice of verification methods Additionally, acceptance criteria for each specified maintainability requirement should be evaluated against cost and time constraints Time limitations may restrict the selection of verification methods, necessitating a structured approach that aligns with the overall program schedule Lastly, three-dimensional imaging simulation can be employed when test samples or support means are not available in a timely manner.
This document is licensed to MECON Limited for internal use in Ranchi and Bangalore, provided by the Book Supply Bureau It outlines the process of data acquisition and analysis, which includes data collection, review, and screening to ensure relevance The evaluation phase involves processing data through mathematical models or checklists to derive quantitative characteristics or qualitative properties related to maintainability Finally, the results of this evaluation are compared against specified maintainability requirements to determine compliance.
For a thorough maintainability verification, it is essential to include a comprehensive item maintenance plan, which applies maintenance concepts to the item and interprets both historical and external data This plan outlines the conditions and constraints for maintenance and support during the verification process Additionally, relevant reliability data, including expected maintenance action frequencies, is crucial for calculating maintainability indices based on estimated or observed maintenance times This data influences verification priorities and prerequisites for evaluation If any information is missing or incomplete, it is important to clearly state the assumptions made, as the quality of the available information and these assumptions significantly impact the relevance of the verification results.
The methods for verification must be defined by the customer or chosen by the contractor and outlined in the maintainability program plan, as per IEC 60706-2 When selecting between different verification procedures for each maintainability requirement, it is essential to consider the available resources, especially if there is a contractual budget limit that may affect the choice of methods Additionally, the potential future usability of verification facilities and the established acceptance criteria should also be taken into account.
The acceptance criteria for each specified maintainability requirement should be considered in a trade-off against cost and time requirements; c) time constraints
The selection of verification methods can be limited by the need for timely results It is essential to align the procedure with the overall development program schedule, particularly in the context of spatial imaging simulation.
This may be used if test samples and support equipment are not available when needed;